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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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An insect's ___ deliver nitrogen-rich waste to its digestive tract.

  1. a. nephridia
  2. b. nephrons
  3. c. Malpighian tubules
  4. d. contractile vacuoles

Summary Introduction

Introduction: Most of the animals have excretory organs with a tubular structure. The body fluids enter to one end of the tube. As these fluids enter through the tube, water, and essential solutes leave the tube and return to the body fluid. The waste continues to the end of the tube and is eliminated from the body.

Explanation

Reasons for the correct statement:

Malpighian tubules are a tubular excretory organ that delivers nitrogenous waste and other substances to the waste-processing portion of the digestive tract.

Hence, option c. is correct.

Reasons for the incorrect statement:

Option a. is given as “nephridia”. However, a nephridium takes up the coelomic fluid, adjusts its content, and releases the waste through a pore in the body wall.

Therefore, option a...

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